Don't show incorrect completions after unsafe or visiblity node

crates/ide_completion/src/completions/snippet.rs

@@ -1,6 +1,7 @@
 //! This file provides snippet completions, like `pd` => `eprintln!(...)`.
 
 use ide_db::helpers::SnippetCap;
+use syntax::T;
 
 use crate::{
     context::PathCompletionContext, item::Builder, CompletionContext, CompletionItem,
@@ -35,9 +36,13 @@ pub(crate) fn complete_expr_snippet(acc: &mut Completions, ctx: &CompletionConte
 }
 
 pub(crate) fn complete_item_snippet(acc: &mut Completions, ctx: &CompletionContext) {
-    if !ctx.expects_item() {
+    if !ctx.expects_item() || ctx.previous_token_is(T![unsafe]) {
         return;
     }
+    if ctx.has_visibility_prev_sibling() {
+        return; // technically we could do some of these snippet completions if we were to put the
+                // attributes before the vis node.
+    }
     let cap = match ctx.config.snippet_cap {
         Some(it) => it,
         None => return,